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Round|Natural|GIA

1.51ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 6502356237

Certificate GIA 6502356237

Diamond specifications and retailer prices

From $8,449 NZD
$4,754 USD
As of November 1, 2026
Save $9,436 NZD (53%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $17,885 NZD at NZ Jewellers · As of November 2, 2026
View at NZ Jewellers

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6502356237. Listed at 16 retailers as of November 1, 2026, with prices from $8,449 to $17,885, a $9,436 spread on the same certified stone. NZ Jewellers lists it at $17,885. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51
Carat
J
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6502356237
Dimensions7.32 × 7.28 × 4.55 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Top View
7.32 mm7.28 mm1.51 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6502356237
Side View
Table 58.0%Crown 36°Girdle: ThickPavilion 40.8°Culet: NoneDepth 62.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $17,885 NZD|Low: $8,449 NZD|High: $17,885 NZD|Avg: $11,623 NZD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 1, 2026
Retailer 11$8,449 NZD
Retailer 9$8,531 NZD
Retailer 10$9,018 NZD
Retailer 4$9,688 NZD
Retailer 13$9,688 NZD
Retailer 14$9,688 NZD
Retailer 8$10,362 NZD
Retailer 3$11,179 NZD
Retailer 2$11,632 NZD
Retailer 5$11,794 NZD
Retailer 6$12,749 NZD
Retailer 12$14,005 NZD
Retailer 7$15,755 NZD
NZ Jewellers$17,885 NZD

40 data points across 14 retailers

16 retailers$8,449 NZD to $17,885 NZD

B+
Cheapest Retailer
-
$8,449 NZD
$4,754 USD
B+
Retailer 2
-
$8,531 NZD
$4,800 USD
View
B+
Retailer 3
-
$9,018 NZD
$5,074 USD
View
B
Retailer 4
-
$9,688 NZD
$5,451 USD
View
B
Retailer 5
-
$9,688 NZD
$5,451 USD
View
B
Retailer 6
-
$9,688 NZD
$5,451 USD
View
B+
Retailer 7
-
$10,362 NZD
£4,591 GBP
View
B
Retailer 8
-
$10,824 NZD
$6,090 USD
View
B
Retailer 9
-
$10,824 NZD
$6,090 USD
View
B
Retailer 10
-
$11,179 NZD
$6,290 USD
View
B
Retailer 11
-
$11,179 NZD
$6,290 USD
View
B
Retailer 12
-
$11,632 NZD
€6,233 EUR
View
Retailer 13
-
$11,794 NZD
$6,636 USD
View
Price last confirmed 10 days ago
Retailer 14
-
$14,005 NZD
£6,205 GBP
View
Price last confirmed 33 days ago
B
Retailer 15
-
$15,755 NZD
£6,980 GBP
View
Most Expensive
B
NZ Jewellers
8f2ff27a-77b1-4959-9a1b-fd8fa3d5c856 · Nov 2
$17,885 NZD
$10,063 USD
View
15 more retailers have this diamond
Prices start from $8,449 NZDSave up to $9,436 NZD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B+
1.51ct Round
$8,449 NZD